Hardness is more important than pH. Your water provider's website should have the hardness on it somewhere. There are lots of different units for hardness so when you do find it give us the unit as well as the number.
If their website doesn't give your hardness, take a sample of your tap water to a fish shop and ask them to test it for GH (general hardness, the one you need) and KH (carbonate hardness, which is useful to know).
You have a few weeks before you can get fish so there is plenty time to decide on which fish to get. You will need to cycle the tank first, and there is an excellent method to follow on this forum here
http://www.fishforums.net/threads/cycling-your-new-fresh-water-tank-read-this-first.421488/